| Combinatorial approach to the development of a single mass YVO(4):Bi(3+),Eu(3+) phosphor with red and green dual colors for high color rendering white light-emitting diodes. | |
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MedLine Citation:
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PMID: 20560596 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Instead of developing a novel red phosphor individually, this work proposes the production of white light by combining a near-ultraviolet/ultraviolet diode chip with blue and special yellow phosphors: the yellow phosphor includes the red and green components with high color saturation. The availability of this scheme is demonstrated by preparing a white light-emitting diode (WLED) with color rendering index (Ra) up to 90.3. The desired single-mass yellow phosphor is successfully screened out from the YVO(4):Bi(3+),Eu(3+) system by using a combinatorial chemistry approach. When the emission color and luminous efficiency are both considered, the best composition for producing white light is (Y(1-s-t)Bi(s)Eu(t))VO(4) with 0.040 < or = s < or = 0.050 and 0 < t < or = 0.015. The red component that is required for a high-Ra WLED is obtained through sensitizing luminescence of Eu(3+) by Bi(3+) in a YVO(4) host; meanwhile, both Bi(3+) and Eu(3+) emission are improved by keeping the Bi(3+) and Eu(3+) contents close to the critical concentration. |
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Authors:
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Lei Chen; Kuo-Ju Chen; Chun-Che Lin; Cheng-I Chu; Shu-Fen Hu; Min-Hung Lee; Ru-Shi Liu |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Journal of combinatorial chemistry Volume: 12 ISSN: 1520-4774 ISO Abbreviation: J Comb Chem Publication Date: 2010 Jul |
Date Detail:
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Created Date: 2010-07-29 Completed Date: 2010-11-08 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 100886263 Medline TA: J Comb Chem Country: United States |
Other Details:
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Languages: eng Pagination: 587-94 Citation Subset: IM |
Affiliation:
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Department of Chemistry, National Taiwan University, Taipei, Taiwan. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Bismuth
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chemistry* Combinatorial Chemistry Techniques* Europium / chemistry* Light Phosphorus / chemistry* Small Molecule Libraries Vanadium Compounds / chemistry* Yttrium / chemistry* |
| Chemical | |
Reg. No./Substance:
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0/Small Molecule Libraries; 0/Vanadium Compounds; 7440-53-1/Europium; 7440-65-5/Yttrium; 7440-69-9/Bismuth; 7723-14-0/Phosphorus |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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